code: def _extract_x_to_text_from_calls(calls):
      channel_values = [
          kwargs["channel_value"] for (_, kwargs) in calls
      ]
      return dict((v.x, v.y["text_value"]) for v in channel_values)
  
file_path: neptune-client/tests/unit/neptune/legacy/test_channel_writer.py
imports: import unittest
  from datetime import datetime
  import mock
  from neptune.legacy.internal.streams.channel_writer import ChannelWriter
label_desc: Use image node_id 4 for calling the TestChannelWriter obj's underlying member method code with example usage: obj._extract_x_to_text_from_calls(calls) and returns: dict